Datasheet

ADSP-21160N
–20– REV. 0
Flags
For Flags, see Table 9 and Figure 12.
Table 9. Flags
Parameter Min Max Unit
Timing Requirements
t
SFI
FLAG3–0 IN Setup Before CLKIN High
1
4ns
t
HFI
FLAG3–0 IN Hold After CLKIN High
1
1ns
t
DWRFI
FLAG3–0 IN Delay After RDx/WRx Low
1
10 ns
t
HFIWR
FLAG3–0 IN Hold After RDx/WRx Deasserted
1
0ns
Switching Characteristics
t
DFO
FLAG3–0 OUT Delay After CLKIN High 9 ns
t
HFO
FLAG3–0 OUT Hold After CLKIN High 1 ns
t
DFOE
CLKIN High to FLAG3–0 OUT Enable 1 ns
t
DFOD
CLKIN High to FLAG3–0 OUT Disable t
CK
–t
CCLK
+5 ns
1
Flag inputs meeting these setup and hold times for instruction cycle N will affect conditional instructions in instruction cycle N+2.
Figure 12. Flags
CLKIN
FLAG3–0
OUT
FLAG OUTPUT
CLKIN
RDx
FLAG INPUT
FLAG3–0
IN
t
DFO
t
HFO
t
DFO
t
DFOD
t
DFOE
t
SFI
t
HFI
t
HFIWR
t
DWRFI
WRx